Randallstown, MD
Long-term air quality
What this page tells you
This page combines annual PM2.5, unhealthy days, 5-year trend, and data coverage so you can compare long-term air quality, not just today's reading.
Randallstown, MD air quality summary: Randallstown, MD maintains a clean air score of 80.1 and a grade of B for its long-term air quality. The city records an annual PM2.5 mean of 6.6 micrograms per cubic meter. The annual PM2.5 mean in Randallstown is 6.6, which is considered moderate or acceptable for long-term exposure. Long-term air quality in Randallstown has been improving over recent years.
Clean Air Score
A clean air score of 80.1 and a B grade indicate that Randallstown generally experiences favorable air quality with relatively low levels of long-term particulate exposure. This rating reflects a stable environment for residents concerned about chronic pollution levels.
🏡 What This Means for Buying
Prospective residents should view the B grade as a positive indicator of the area's long-term environmental health. Air quality in Randallstown remains a reliable factor for those evaluating the local living environment.
Indoor Air Quality in Randallstown, MD
Outdoor pollution can still affect indoor air when windows are open, filtration is weak, or wildfire smoke moves in.
How to react when today's AQI changes
Use the AQI bands below to decide whether to open windows, run an air purifier, or stay indoors when pollution spikes in Randallstown.
AQI 0-50
GoodOpen windows: Open windows if you want fresh air.
Air purifier: No purifier needed for most homes.
Indoor activity: Normal indoor activity is fine.
AQI 51-100
ModerateOpen windows: Sensitive groups should limit open-window time.
Air purifier: Use fans or filtration if dust or pollen is bothering you.
Indoor activity: Most people can stay active indoors.
AQI 101-150
Unhealthy for Sensitive GroupsOpen windows: Keep windows closed.
Air purifier: Run a HEPA purifier in the main room and bedroom.
Indoor activity: Sensitive groups should reduce outdoor exposure.
AQI 151+
UnhealthyOpen windows: Keep windows and doors closed.
Air purifier: Run HEPA continuously and seal obvious drafts.
Indoor activity: Stay indoors as much as possible; use an N95 if you must go out.
Common indoor air concerns in Randallstown:
- Seasonal pollen and dust mite allergens
- VOCs from household products
Recommended action: If today's AQI reaches 101 or higher, close windows and run HEPA filtration before indoor air starts to feel smoky or stale.
Top Products for Randallstown Homes:
🩺 My Health Risk Assessment
See how Randallstown's air quality affects you and your family specifically.
Health Advice
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, Randallstown's air quality improved by 1.8 μg/m³. Based on NBER studies, this change correlates with a estimated 7.2% increase in relative property value retention.
Cleaner Alternatives in MD
Why Randallstown earned a 80.1
Raw inputs, scoring weights, and data coverage for this city.
Best Time to Run
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Cycling Forecast
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📅 Past 30 Days Trend
Real-time daily PM2.5 AQI
🌸 Pollen Outlook
Current Seasonal Forecast
How it worksBased on current seasonal forecast data. Not a long-term pollution rating or relocation score.
Score Breakdown
| Component | Weight | Score Contribution |
|---|---|---|
| Annual Air Quality | 40% | 76.8 |
| Unhealthy Days | 25% | 100 |
| 5-Year Trend | 20% | 59 |
| Seasonal Variability | 10% | 93.9 |
| Extreme Events | 5% | 100 |
Explore More Air Quality Data
Frequently Asked Questions
About This Data
Data Sources
Historical air quality mapping and scoring are based completely on official U.S. Environmental Protection Agency (EPA) AirNow API data. 5-day AQI forecasts are provided by WAQI.
Methodology
Our Clean Air Score (0-100) is a proprietary algorithm that weighs multiple factors:
- Annual PM2.5 averages (40%)
- Frequency of unhealthy days (25%)
- 5-year pollution trends (20%)
- Seasonal variability and extreme events (15%)
Updates & Accuracy
Real-time data is updated hourly. Historical aggregate scores are recalculated monthly to reflect the latest trends. While we strive for accuracy, sensor maintenance and local conditions can affect individual readings.
Practical Advice
When AQI > 100: Sensitive groups (children, elderly, asthmatics) should limit prolonged outdoor exertion.
When AQI > 150: Everyone should avoid outdoor exercise and keep windows closed.
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Randallstown Air Quality FAQs
Is Randallstown a good fit for people who care about long-term air quality?
Randallstown, MD is a suitable option, as it holds a clean air score of 80.1 and a B grade. The annual PM2.5 mean of 6.6 suggests a generally healthy environment for long-term living.
What is the frequency of unhealthy air or long-term pollution exposure in Randallstown?
Randallstown maintains an unhealthy days percentage of 0, reflecting its B grade and consistent air quality. Long-term exposure to PM2.5 remains within acceptable limits at 6.6 micrograms per cubic meter.
Is air quality in Randallstown improving or getting worse over time?
The air quality in Randallstown has been improving over recent years. This positive trend indicates a gradual reduction in long-term pollution levels for the community.
Does air quality vary across different parts of Randallstown?
Air quality can vary within the city due to local traffic, industry, and location patterns. Air quality can vary within the city due to local traffic, industry, and location patterns, without naming specific districts.